"Widows’ House", also known as the “Little Palace”, was built as a separate residence from 1803-1804 by the son of Christian Gottfried Mentzel (I) – Christian Gottfried Mentzel (II), owner of the neighbouring large Łomnica palace.

Erected for elder members of the family, its architect is unknown – although presumed to have been Albert Tollberg, the architect who designed the main palace. Featuring two storeys on a rectangular plan, the building has a hip roof with dormers and avant-corps protruding slightly on the north and south, centred on its axis and crowned with a triangular tympanum. The hall inside has cross vaulting with ribs flowing down onto the supporting pillars. The main staircase features an openwork wooden balustrade.

The Widows’ House belonged to the Kuster family from 1835.In 1841, Carl Gustav Ernest von Kuster acquired Lubiechowa and merged it with Łomnica to form indivisible and unsellable estate. Only in the year 1919 did Mark-Albrecht von Kuster purchase the property from the dissolved indivisible and unsellable estate from Alfred von Kuster.The large palace and landed property were leased out.The Kuster family together with the administrator’s family took up residence in the Widows’ House. Apartments were portioned off within the building, thus altering its spatial division. The families lived there until 1926. In 1941 Mark-Albrecht died in an air crash, and his wife Constanze managed the property until the end of the war.After World War II the building was used for the administration of a Farming Production Cooperative. Its spatial division was altered in 1978, when a few partition walls were installed. In 1995 “Widows’ House’ was bought by the large palace’s community of owners.The building was renovated, and early-classicistic frescos were uncovered and restored on the ceiling and walls in the Small Hall. Wooden parquetry from the days when “Widows’ House” was constructed has also survived. Currently the building houses a hotel and restaurant.